Loading AI tools
Star in the constellation Libra From Wikipedia, the free encyclopedia
11 Librae is a single,[5] fifth-magnitude star in the southern zodiac constellation of Libra. It is faintly visible to the naked eye with an apparent visual magnitude is 4.93.[2] The star is moving further from the Sun with a heliocentric radial velocity of +83.6 km/s.[3] The distance to this star, as estimated from its annual parallax shift of 14.92±0.40 mas,[1] is about 219 light years.
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Libra |
Right ascension | 14h 51m 01.07273s[1] |
Declination | −02° 17′ 56.9488″[1] |
Apparent magnitude (V) | 4.93[2] |
Characteristics | |
Spectral type | K0 III-IV[2] |
B−V color index | 0.988±0.001[2] |
Astrometry | |
Radial velocity (Rv) | +83.60±0.06[3] km/s |
Proper motion (μ) | RA: +89.97[1] mas/yr Dec.: −124.57[1] mas/yr |
Parallax (π) | 14.92 ± 0.40 mas[1] |
Distance | 219 ± 6 ly (67 ± 2 pc) |
Absolute magnitude (MV) | 0.80[2] |
Details[3] | |
Mass | 1.10±0.22 M☉ |
Radius | 10.32±0.60 R☉ |
Luminosity | 59+15 −12 L☉ |
Surface gravity (log g) | 2.42±0.09 cgs |
Temperature | 4,749±54 K |
Metallicity [Fe/H] | −0.32±0.09 dex |
Rotational velocity (v sin i) | 3.74±0.48 km/s |
Age | 5.05±2.67 Myr |
Other designations | |
Database references | |
SIMBAD | data |
This star has a stellar classification of K0 III/IV,[6] indicating the spectrum displays mixed traits of a giant/subgiant K-type star. Alves (2000) and Afşar et al. (2012) classify it as a red clump star, which means it is an evolved star at the cool end of the horizontal branch and is generating energy through helium fusion in its core region.[7][8] It is about five billion years old and is spinning with a projected rotational velocity of 4 km/s. The star has 1.1 times the mass of the Sun and has expanded to over 10 times the Sun's radius. It is radiating around 59 times the Sun's radius from its enlarged photosphere at an effective temperature of about 4,749 K.[3]
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.